Question

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》 Explain How does a Electric motor works ?

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Answer 1

An electric motorcycle works essentially the same way a gas-powered motorcycle works: it is propelled by an engine, and that engine requires fuel. The main difference is that the gas fuel in a conventional motorcycle is replaced by either batteries or fuel cells in an electric version.

Answer 2

Hello sir !!

HERE IS YOUR ANSWER,,,



what is electric motor ??

- An electric motor is a device that can convert electrical energy into mechanical energy.


Principle of electric motor :-

- The force acts on a current carrying wire placed in a magnetic field.

- Electric motor works on this principle.


Working :-

- The electric current flows through a loop ABCD by connecting a battery between brushes X and Y.

- The current flowing through BC and AD is either parallel or antiparallel to magnetic field so force does not act on them.

- The currents flowing in wire AB is from A to B and in wire CD is from C to D are perpendicular to the magnetic field, hence force act on them. According to Fleming's left hand rule the direction of the force on AB acts in the downward direction and the force on CD acts in upward direction.

- These two forces are equal in magnitude and opposite in direction and so the loop ABCD is rotated in anticlockwise direction.

- After the completion of half rotation. the ring Q comes in contact with the brush x and the ring P with the brush Y. So that the direction of an electric current flowing in the loop gets reversed. Due to this, the direction of force acting on AB and CD wire is also reversed and electric current flows through path DCBA.

- Hence , the direction of the force acting on AB is in the upward direction and the force on CD acts in downward directions. So the loop completes the remaining half rotation in the same direction.

- At the end of one rotation loop comes to the earlier position.

- Thus, after every half rotation the direction of electric current in a loop changes and loop rotates continuously.



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